Most years, concept cars at Toronto's Canadian International Auto Show are cast-offs from ancient auto shows and they have little significance beyond being mere curiosities. Not this year. &lt;p&gt;The crop of concept cars at this year's Toronto auto show are an impressive collection of ideas and promise. They're current, too, including several concepts shown just last month for the first time at Detroit's auto show.&lt;/p&gt; &lt;p&gt;Honda, for instance, has gone all out with its Acura NSX and ILX concepts, along with the Honda Accord Coupe concept. All three will hit dealer showrooms at some point. Ford's Lincoln brand is showing the MKZ concept, a production version of which will be unveiled in the spring at the New York auto show.&lt;/p&gt; &lt;p&gt;The takeaway from this group of concepts is this: budget-conscious auto executives are obsessed with using concept cars to signal soon-to-be launched production cars and occasionally to test drive technology and design ideas.&lt;/p&gt; &lt;p&gt;Here's a rundown of what's on offer at this year's Toronto show:&lt;/p&gt;